Since the Instance number is suffixed with trait name (5), Instance number is mapped
(7) in the Trait Name Mapping datagrid.
So, even when the Instance number is mapped in Column Name mapping datagrid,
the mapping will be removed before the import process starts. Click
here for the Instance Number Message.

Trait Name suffixed with Trait Instance Number (Grain_Yield_Raw
is the trait and 1 is the instance number
in the snapshot).